TPS3700-Q1 Automotive High Voltage (18V) Window Voltage Detector With Internal Reference for Over and Undervoltage Monitoring
1 Features
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
- Device HBM ESD Classification Level H2
- Device CDM ESD Classification Level C6
- Functional Safety-Capable
- Wide Supply Voltage Range: 1.8 V to 18 V
- Adjustable Threshold: Down to 400 mV
- Open-Drain Outputs for Overvoltage and Undervoltage Detection
- Low Quiescent Current: 5.5 µA (typ)
- High Threshold Accuracy:
- 1% Over Temperature
- 0.25% (typ)
- Internal Hysteresis: 5.5 mV (typ)
- Available in ThinSOT23-6 and WSON Packages
3 Description
The TPS3700-Q1 wide-supply window voltage detector operates over a 1.8 V to 18 V range. The device has two high-accuracy comparators with an internal 400-mV reference and two open-drain outputs rated to 18 V for overvoltage and undervoltage detection. The TPS3700-Q1 device can be used as a window voltage detector or as two independent voltage monitors; the monitored voltage can be set with the use of external resistors. For even wider input voltage capability up to 65 V, see the TPS37A-Q1 or the TPS38A-Q1 devices.
The OUTA terminal is driven low when the voltage at the INA+ terminal drops below (VIT+ – Vhys), and goes high when the voltage returns above the respective threshold (VIT+). The OUTB terminal is driven low when the voltage at the INB– terminal rises above VIT+, and goes high when the voltage drops below the respective threshold (VIT+ – Vhys). Both comparators in the TPS3700-Q1 device include built-in hysteresis for filtering to reject brief glitches, thereby ensuring stable output operation without false triggering.
The TPS3700-Q1 device is available in a Thin SOT-6 and a 1.5-mm x 1.5-mm WSON-6 package and is specified over the junction temperature range of –40°C to 125°C.
| ORDER NUMBER | PACKAGE (1) | BODY SIZE |
|---|---|---|
| TPS3700-Q1 | SOT23 (6) | 2.90 mm × 1.60 mm |
| WSON (6) | 1.50 mm x 1.50 mm |
Simplified Schematic
Output vs Input Thresholds and
Hysteresis4 Revision History
Changes from Revision B (July 2017) to Revision C (March 2021)
- Added bullet for Functional Safety-Capable deviceGo
- Added links to TI.com applications pagesGo
- Updated the numbering format for tables, figures, and cross-references throughout the document, corrected part# to GPN in device informationGo
- Moved Storage temperature range here in the Absolute Maximum Ratings from the section previously called handling ratings (which also included ESD ratings) when the ESD ratings section was updated per the latest formatGo
- Corrected table formatting, descriptions and the notes in ESD Ratings section per the latest standardsGo
- Corrected Input Voltage Max on INA+, INB- from 6 V to 6.5 V to match the device capabilityGo
- Added missing Thermal Information for the DSE packageGo
- Added the missing max start-up delay spec and corrected corresponding note 2Go
Changes from Revision A (April 2014) to Revision B (July 2017)
Changes from Revision * (March 2014) to Revision A (April 2014)
- Changed device status from Product Preview to Production Data. Go
5 Pin Configuration and Functions
Figure 5-1 DDC Package SOT-6
Top View
Figure 5-2 DSE PackageWSON-6
Top View
| PIN | I/O | DESCRIPTION | ||
|---|---|---|---|---|
| NAME | DDC | DSE | ||
| GND | 2 | 5 | — | Ground |
| INA+ | 3 | 4 | I | This pin is connected to the voltage to be monitored with the use of an external resistor divider. When the voltage at this terminal drops below the threshold voltage (VIT+ – VHYS), OUTA is driven low. |
| INB– | 4 | 3 | I | This pin is connected to the voltage to be monitored with the use of an external resistor divider. When the voltage at this terminal exceeds the threshold voltage (VIT+), OUTB is driven low. |
| OUTA | 1 | 6 | O | INA+ comparator open-drain output. OUTA is driven low when the voltage at this comparator is below (VIT+ – VHYS). The output goes high when the sense voltage returns above the respective threshold (VIT+). |
| OUTB | 6 | 1 | O | INB– comparator open-drain output. OUTB is driven low when the voltage at this comparator exceeds VIT+. The output goes high when the sense voltage returns below the respective threshold (VIT+ – VHYS). |
| VDD | 5 | 2 | I | Supply voltage input. Connect a 1.8-V to 18-V supply to VDD to power the device. Good analog design practice is to place a 0.1-µF ceramic capacitor close to this pin. |
